Typewriting machine



1,618,454. Feb. 22, 19 21. UNDBURG TYPEWRITING mams Filed Feb. 12. 1924Patented Feb. 22, 1927.

a 1,618,454 UNITED STATES PATENT OFFICE"...

JOSEPH LINDBURG, on BROOKLYN, NEW YORK; ASSIGNOR To UnnEnwoon TYPE-WRITER ,CoMrANY, OF NEW YORK, N. Y., A CORPORATION-F DELAWARE.

TYPEWRITING MACHINE. I

7 Application filed February 12; 1924. Serial No. 692,282.

This invention relates Ito means for re-. taining a typewriting machineon a desk. Heretofore, there has been a direct connection between themachine and the baseboard,

thus providing a conductor for vibrations,

and tending to augment the sound.

It is desirable to minimize or eliminate the conductionofsound-vibrations to the outside support. An object of the presentinvention is to provide a retaining device for such purpose. There areused a sounddampening box and also spaced sockets in a baseboard for therubber feet of the box, which encases the typewriting machine.

Fastening elements prevent the typewriting machine from being lifted,but do not contact with any part of the machine, and hence do notpropagate sound.

Each of said fastening elements may be in the form of anupwardly-extending, pivoted clamp pressed by a spring over themachineframe, and swinging to allow the machine with its casing to belifted free from the baseboard;

The clamps are arranged to'be clear of the machine-frame, so thatnothing but a sound absorbing material is interposed between thetypewriter and its baseboard; but when the support is swung to aninclined position to lower the machine into the back part of the desk,the retaining device confines the machine to such support. The fasteningelement has a foot which is pressed against a soft pad, to keep thefastening element from swinging into contact with the typewriterframe.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a view in front elevation of a fragmentary portion of atypewriting machine fitted in a sound-absorbing casing and mounted on abaseboard, showing the retaining clamps for holding the machine againstaccidental displacement from its support, but normally not in contactwith the mashine, to avoid transmission of sound-producing vibration tothe support.

Figure 2 is a fragmentary side view of that shown in Figure 1.

Referring to the drawings, denotes a hinged desk, top, baseboard orother support for a typewriting machine 11, which is encased in asound-dampening box'or casing 12. The sound-dampening box 12 may be likethat disclosed in the application of Cornelius B. Corcoran,'N0. GO LAGS,filed Decemoer 2, 1922 (now Patent No. 1,509,828, dated the rubber feet12 of the casing 12 to prev vent sliding thereof and to hold the machine11 against displacement, except in an upward direction, from the base10.

c In order to prevent the machine 11 and casing 12 from leaving theirsupport 10 when the latter is tilted, suitable fastening devices mountedon base 10 are provided, which may consist of upwardly-projectingcatches 15 having their engaging ends or hooks 16 extending inwardlyfrom the outer edge of the baseboard 10 over the front-extendingmachine-frame sides 11 as shown in Figures 1 and 2. The catches 15 attheir lower ends may have. lateral ofisets which are pivoted betweenears 17 of fastening members 18, which are firmly secured to base 10, asby screws 19. A coil compression spring 20 may be arranged between theoffset portions of catches 15 and members 18,

to urge the catches 15 inwardly until catches 15 strike stops 21 onmembers 18.

As shown in Figure 2, the catches 15 do not anywhere contact with themachineframe sides 11" when the machine 11 is in normal typewritingposition. Thus the possibility of conducting sound-producing vibrationsoustside the casing 12 to the supportingbase 10 is eliminated. However,when the baseboard 10 is swung to an in clined position, the hooks 16 ofthe catches 15 engage the frame sides 11 and prevent the machine 11 andits casing 12 from leavmg the base. By simply swinging catches 15outwardly, the machine 11 and its casing 12 may be removed by liftingsame free from the base 10.

When the machine occupies its typing position on the baseboard, as shownin the drawings, each hook occupies such a position with relation to themachine that the hook and machine do not contact with each other, thiswant of contact'being secured partly by the form ofthe lower orpivotedend of the hook and partly by placing the upper or hooked end ofthe hook at such an altitude above the machine as to keep them out ofengagement; this construction being the means referred to in thesubjoined claim.

Variations may he resorted to within the scope of the invention, andportions of the improvements may he used Without others.

Having thus described my invention, I claim: i

The combination of a typewriting machinm a sound-deadening box enclosingthe machine feet on the box, n tilting support on whlch the box andmachine are mounted, sockets on the support 111 which the feet on thebox nre placed, catches n cnlnted on the support arrangednuttnnntiezilly to engage the machine when the sup oi't is tilted andprevent the nmehine and hox from falling oil of the support in itstilted position, and means for preventing the catches from on gaging themachine and box with said sup port in a level position during thetypewritin g operation.

JOSEPH LINDBURG.

